3035-73-2Relevant academic research and scientific papers
Regioselective alkylation reaction of purines under microwave irradiation
Vinuesa, Arturo,Vi?as, Miquel,Jahani, Daniel,Ginard, Jaume,Mur, Nuria,Pujol, Maria Dolors
, p. 597 - 602 (2021/12/22)
The alkylation of purines which is generally carried out after anion formation by treatment with a base and alkyl halide is complicated and in the best cases, mixtures of N-alkylated compounds are obtained. Purine derivatives can be acquired from alkylati
The discovery of purine-based agents targeting triple-negative breast cancer and the αB-crystallin/VEGF protein–protein interaction
Fosu-Mensah, Nelly A.,Jiang, Wen,Brancale, Andrea,Cai, Jun,Westwell, Andrew D.
, p. 182 - 202 (2019/01/04)
Oestrogen receptor-negative breast cancer, particularly subtypes such as triple-negative breast cancer (TNBC, around 10–15% of cases), are characterised by poor long-term survival, poor response to therapy and early progression to metastasis. Purine-based compounds represent a privileged scaffold in anticancer drug design, with several clinically approved and experimental agents in clinical development comprising a purine core structure. In this study, a series of new purine-based compounds were synthesised; seven of the new analogues were found to significantly reduce the in vitro viability of TNBC cell lines (MDA-MB-231 and MDA-MB-436) with IC50 values of ≤50 μM. In previous work, we have proposed a new concept for targeting angiogenesis driving TNBC progression, by disrupting the protein–protein interaction between the molecular chaperone αB-crystallin (CRYAB) and VEGF. Since previous clinical studies applying anti-VEGF therapy to TNBC patients have met with limited success, we were interested to test our most promising purine analogues against CRYAB/VEGF, using a custom-designed cell-based CRYAB/VEGF165 interaction assay platform. Analogues 4e and 4f significantly reduced the interaction between CRYAB/VEGF165, and compound 4e (100 μM) was also found to decrease the levels of soluble VEGF expressed by MDA-MB-231 cells by 40%. In conclusion, these promising early activity profiles warrant further investigation to validate this concept.
Tricyclic purine analogs derived from 2-amino-6-chloropurine and 2,6-diaminopurine and their methylated quaternary salts
Horejsi, Katerina,Pohl, Radek,Holy, Antonin
, p. 77 - 90 (2007/10/03)
A novel series of tricyclic, etheno-bridged purine analogs was sythesized from 2-amino-6-(substituted amino)-9-methylpurines by cyclization with chloroacetaldehyde, with particular focus on the regioselectivity of the cyclization reaction and fluorescence properties. The analogs as well as the starting purines were alkylated with iodomethane, affording a new class of quaternary salts with potential biological activity. Neither significant fluorescence nor cytostatic effect was found.
HIV REPLICATION INHIBITING PURINE DERIVATIVES
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Page/Page column 65, (2010/02/11)
The present invention relates to the use of a compound of formula (I) for the manufacture of a medicament for the prevention or the treatment of HIV infection wherein the compound of formula (I) is a compound of formula (I) a N-oxide, a pharmaceutically a
6-Guanidinopurine nucleosides and their analogues
Cěsnek, Michal,Holy, Antonín,Masojídková, Milena
, p. 2985 - 2996 (2007/10/03)
A general synthetic approach to 6-guanidinopurines, their ribonucleosides, 2-deoxyribonucleosides, acyclic nucleoside analogues and acyclic nucleoside phosphonates was developed. The approach consists in the reaction of the 6-chloropurine derivatives with guanidine solution in DMF under DABCO catalysis. This method was used to synthesize 6-guanidinopurine and 2-amino-6-guanidinopurine derivatives. Acyclic nucleosides and acyclic nucleoside phosphonates were also obtained by alkylation of the 6-guanidinopurine bases.
2-alkynyl-8-aryl-9-methyladenines as novel adenosine receptor antagonists: Their synthesis and structure-activity relationships toward hepatic glucose production induced via agonism of the A2B receptor
Harada,Asano,Hoshino,Yoshikawa,Matsukura,Kabasawa,Niijima,Kotake,Watanabe,Kawata,Inoue,Horizoe,Yasuda,Minami,Nagata,Murakami,Nagaoka,Kobayashi,Tanaka,Abe
, p. 170 - 179 (2007/10/03)
Novel adenosine antagonists, 2-alkynyl-8-aryl-9-methyladenine derivatives, were synthesized as candidate hypoglycemic agents. These analogues were evaluated for inhibitory activity on N-ethylcarboxamidoadenosine (NECA)-induced glucose production in primar
Identification of novel purine and pyrimidine cyclin-dependent kinase inhibitors with distinct molecular interactions and tumor cell growth inhibition profiles
Arris, Christine E.,Boyle, F. Thomas,Calvert, A. Hilary,Curtin, Nicola J.,Endicott, Jane A.,Garman, Elspeth F.,Gibson, Ashleigh E.,Golding, Bernard T.,Grant, Sharon,Griffin, Roger J.,Jewsbury, Philip,Johnson, Louise N.,Lawrie, Alison M.,Newell, David R.,Noble, Martin E. M.,Sausville, Edward A.,Schultz, Robert,Yu, Wyatt
, p. 2797 - 2804 (2007/10/03)
Substituted guanines and pyrimidines were tested as inhibitors of cyclin B1/CDK1 and cyclin A3/CDK2 and soaked into crystals of monomeric CDK2. O6- Cyclohexylmethylguanine (NU2058) was a competitive inhibitor of CDK1 and CDK2 with respect to ATP (K(i) values: CDK1, 5 ± 1 μM; CDK2, 12 ± 3 μM) and formed a triplet of hydrogen bonds (i.e., NH-9 to Glu 81, N-3 to Leu 83, and 2-NH2 to Leu 83). The triplet of hydrogen bonding and CDK inhibition was reproduced by 2,6-diamino-4-cyclohexylmethyloxy-5-nitrosopyrimidine (NU6027, K(i) values: CDK1, 2.5 ± 0.4 μM; CDK2, 1.3 ± 0.2 μM). Against human tumor cells, NU2058 and NU6027 were growth inhibitory in vitro (mean GI50 values of 13 ± 7 μM and 10 ± 6 μM, respectively), with a pattern of sensitivity distinct from flavopiridol and olomoucine. These CDK inhibition and chemosensitivity data indicate that the distinct mode of binding of NU2058 and NU6027 has direct consequences for enzyme and cell growth inhibition.
Synthesis of heteromine C from guanine
Jakobsen, Erik,Gundersen, Lise-Lotte
, p. 935 - 940 (2007/10/03)
Heteromine C previously isolated from a Taipei folk medicine plant, has been synthesised for the first time by selective methylation reactions starting from guanine. Thermal rearrangement to 1-methylherbipoline takes place when heteromine C is heated. It is shown that treatment of O6,9- dimethylguanine with methyl iodide gives the O6,7,9-trimethylguaninium iodide with complete selectivity, while similar reaction on O6,7- dimethylguanine results in methylation both in the 3- and 9-position.
Synthesis and in vitro evaluation of novel 2,6,9-trisubstituted purines acting as cyclin-dependent kinase inhibitors
Legraverend, Michel,Ludwig, Odile,Bisagni, Emile,Leclerc, Sophie,Meijer, Laurent,Giocanti, Nicole,Sadri, Ramin,Favaudon, Vincent
, p. 1281 - 1293 (2007/10/03)
Novel C-2, C-6, N-9 trisubstituted purines derived from the olomoucine/roscovitine lead structure were synthesized and evaluated for their ability to inhibit starfish oocyte CDK1/cyclin B, neuronal CDK5/p35 and erk1 kinases in purified extracts. Structure
